Cliché [of a living creature] very strong. (*Also: as ~.) Jill:
My car broke down; it's sitting out on the street. Jane: Get Linda to
help you push it; she's as strong as a horse. The athlete was strong as
an ox; he could lift his own weight with just one hand. The football
player was strong as a lion.

beard the lion in his den and beard someone in his den

Prov. to confront someone on his or her own territory. I
spent a week trying to reach Mr. Toynbee by phone, but his secretary
always told me he was too busy to talk to me. Today I walked straight
into his office and bearded the lion in his den.If the landlord doesn't contact us soon, we'll have to beard him in his den.

Better be the head of a dog than the tail of a lion.

Prov. It is better to be the leader of a less prestigious group than to be a subordinate in a more prestigious one. Joe:
I can be the headmaster of a small secondary school, or I can be a
teacher at a famous university. Which job offer do you think I should
take? Nancy: Better be the head of a dog than the tail of a lion.A
professional writing workshop had asked Bob to join, but he elected to
stay with his amateur group, since he thought it better to be the head
of a dog than the tail of a lion.

March comes in like a lion, and goes out like a lamb, and In like a lion, out like a lamb.

Prov.
The month of March usually starts with cold, unpleasant weather, but
ends mild and pleasant. (Either part of the proverb can be used alone.) March certainly is coming in like a lion this year; there's been a snowstorm every day this week.Jill:
Today is March twenty-fifth, and it's beautiful and warm outside, when
just two weeks ago, everything was covered with ice. Jane: In like a
lion and out like a lamb, all right.

the lion's share

the biggest part of something The lion's share of the museum's budget goes on special exhibitions.